2022 PRODUCTS CATALOG - INDUSTRIAL HOSE, COUPLINGS AND EQUIPMENT

CARE AND MAINTENANCE OF HOSE (REPRINTED FROM ARPM HOSE HANDBOOK 9TH EDITION) Hose has a limited life and the user must be alert to signs of impending failure, particularly when the conditions of service include high working pressures and/or the conveyance or containment of hazardous materials. The periodic inspection and testing procedures described here provide a schedule of specific measures which constitute a minimum level of user action to detect signs indicating hose deterioration or loss of performance before conditions leading to malfunction or failure are reached. General instructions are also described for the proper storage of hose to minimize deterioration from exposure to elements or environments which are known to be deleterious to rubber products. Proper storage conditions can enhance and extend substantially the ultimate life of hose products. GENERAL CARE AND MAINTENANCE OF HOSE Hose should not be subjected to any form of abuse in service. It should be handled with reasonable care. Hose should not be dragged over sharp or abrasive surfaces unless specifically designed for such service. Care should be taken to protect hose from severe end loads for which the hose or hose assembly were not designed. Hose should be used at or below its rated working pressure; any changes in pressure should be made gradually so as to not subject the hose to excessive surge pressures. Hose should not be kinked or be run over by equipment. In handling large size hose, dollies should be used whenever possible; slings or handling rigs, properly placed, should be used to support heavy hose used in oil suction and discharge service. GENERAL TEST AND INSPECTION PROCEDURES FOR HOSE An inspection and hydrostatic test should be made at periodic intervals to determine if a hose is suitable for continued service. A visual inspection of the hose should be made for loose covers, kinks, bulges or soft spots which might indicate broken or displaced reinforcement. The couplings or fittings should be closely examined, if there is any sign of movement of the hose from the couplings, the hose should be removed from service. The periodic inspection should include a hydrostatic test for one minute at 150% of the recommended working pressure of the hose. An exception to this would be woven jacketed fire hose*. During the hydrostatic test, the hose should be straight, not coiled or in a kinked position. Water is the usual test medium, but following the test the hose may be flushed with alcohol to remove traces of moisture. A regular schedule for testing should be followed and inspection records maintained. SAFETY WARNING: Before conducting any pressure tests on hose, provision must be made to ensure the safety of the personnel performing the tests and to prevent any possible damage to property. Only trained personnel using proper tools and procedures should conduct pressure tests. * Woven jacket fire hose should be tested in accordance with the service test provisions contained in the current edition of National Fire Protection Association Bulletin No. 1962 - Standard for the Inspection, Care, and Use of Fire Hose, Couplings, and Nozzles and the Service Testing of Fire Hose. SAFETY WARNING (FOR PRESSURE TESTING) 1. Air or any other compressible gas must never be used as the test media because of the explosive action of the gas, should a failure occur. Such a failure might result in possible damage to property and serious bodily injury. 2. Air should be removed from the hose by bleeding it through an outlet valve while the hose is being filled with the test medium. 3. Hose to be pressure tested must be restrained by placing steel rods or straps close to each end and at approximate 3 m (10 foot) intervals along its length to keep the hose from “whipping” if failure occurs; the steel rods or straps are to be anchored firmly to the test structure but in such a manner that they do not contact the hose which must be free to move. 4. The outlet end of the hose is to be restrained so that a blown-out fitting will be stopped. 5. Provisions must be made to protect testing personnel from the forces of the pressure media if a failure occurs. 6. Testing personnel must never stand in front of, or in back of, the ends of a hose being pressure tested. 7. If liquids such as gasoline, oil, solvent or other hazardous fluids are used as the test fluid, precautions must be taken to protect against fire or other damage should a hose assembly fail and the test liquid be sprayed over the surrounding area. The Association for Rubber Products Manufacturers has separately published a series of Hose Technical Bulletins describing hoses designed for different applications which detail maintenance, testing and inspection recommendations. Reference should be made to the current ARPM Catalog of Publications, to determine the availability of the latest editions (www.arpminc.com) . PUBLICATION NO. IP 11-1 Steam Hose IP 11-2 Anhydrous Ammonia Hose IP 11-4 Oil Suction and Discharge Hose SAFETY WARNING: Failure to properly follow the manufacturer’s recommended procedures for the care, maintenance and storage of a particular hose might result in its failure to perform in the manner intended and might result in possible damage to property and serious bodily injury. . GATES INDUSTRIAL HOSE PRODUCTS www.gates.com 31